UPDATED - 15:30 on 08 June 2021: The linking (audio and DTMF) function has been restored as of this afternoon, and all repeaters should be working as normal. Thanks go out to the folks at DTI Radio Communications for the fix.
Users may notice some gaps in the system, there are some repeaters in some zones which are not passing audio both ways within zones. For example, your local repeater might seem to work fine, and other repeaters might hear you, but you won't hear audio from the other repeaters in the zone. Dept. of Transportation and Infrastructure (DTI) Radio Comm branch is aware of the problem and are working on a solution.
One result of this is that you may be talking on your local repeater, and someone on another repeater on that zone may suddenly start talking over you, because they may not hear your ongoing conversation. You might hear them, but they might not be able to hear you. Please be patient and understand it may not be an intentional interruption. You may have to switch to another repeater to avoid interference.
Updated: This issue also affects the link to Nova Scotia / PEI MAVCOM system. The link may work, but your audio will not be heard on their end.
If you have not heard the repeater I.D. within the last half hour, it's also probably "out of the link" and may not be receiving audio from other repeaters in that zone, or from other zones.
Members with DTMF privileges can find out if their local repeater is linked properly with a simple test: send the DTMF code for the current time (found on your linking map). If you hear the "time is..." response, the repeater is probably linked properly within the zone (even though the time may not be correct....). If you DO NOT hear the "time is..." response, avoid using the repeater as you may be interfering with others who you cannot hear.
Of course, always remember to send your call sign as required by RBR-4, "... at the beginning and at the end of each period of exchange of communication or test transmission, and at intervals of not more than 30 minutes throughout the period of exchange of communication. " This includes when sending DTMF tones.